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Consider the spherical satellite of Problem 12.130. Instead of the entire satellite being coated with a material that is spectrally selective, half of the satellite is covered with a diffuse gray coating character(c) Use your computer code to calculate the heat rateized by a1 = 0.6. The other half of the satellite is and tip temperature for GS = 0 and an extremely large value of the thermal conductivity. Compare coated with a diffuse gray material with a2 = 0.3.
Your results to those obtained from a hand calculation that assumes the radiator to be at a uniform temperature Tb. What other approach might you use to validate your code?
5 lbm of refrigerant 22 r-22 is contained in a piston cylinder device. the r-22 initially at a pressure of 30 psia and
a slab-milling operation is being carried out on a 20-in.-long 6-in.-wide high-strength-steel block at a feed of 0.01
An insulated piston-cylinder assembly containing a fluid has a stirring device operated externally. The piston is frictionless, and the force holding it against the fluid is due to standard atmospheric pressure and a coil spring. The spring constant ..
determine the minimum coefficient of static friction between the uniform 50 kg spool and the wall so that the spool
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A piston-cylinder assembly in an air atmosphere of p = 1 atm (= 1.013 bar) contains 1 kg of nitrogen. The initial volume of the nitrogen is 1 m^3, and its initial pressure is 1 atm. The side of the cylinder is heated such that the heat transfer to th..
a gas is confined by a piston 10 cm in diamater on which rests a weight. the mass of the piston and weight together is
steam at 25 psia and 250degf is condensed at its saturation temperature. what is the temperature of the condensate? how
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a golfer wants to hit a ball a horizontal distance of 130 meters with a maximum height of 20 meters above his tee-off
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